LTC3458 Linear Technology, LTC3458 Datasheet - Page 6

• Manufacturer Part Number: LTC3458
• Description: 1.4A/ 1.5MHz Synchronous Step-Up DC/DC Converter with Output Disconnect
• Manufacturer: Linear Technology

TYPICAL PERFOR A CE CHARACTERISTICS
LTC3458
6
200mA/DIV
200mV/DIV
200mA/DIV
200mA/DIV
200mV/DIV
500mV/DIV
5V/DIV
2V/DIV
BURST
LOAD
SYNC
V
V
SW
OUT
OUT
I
I
I
L
L
L
Sync Operation at 1.33MHz
Burst Mode Operation 10mA to
50mA Load Step
10mA to 200mA Load Step
Showing UV Trip
V
V
R
V
V
L = 10µH
C
IN
OUT
IN
OUT
OUT
OSC
= 3.3V
= 3.3V
= 7V
= 5V
= 22µF
= 200k
W
–4%
500ns/DIV
200µs/DIV
200µs/DIV
U
V
V
L = 10µH
C
R
50mA
10mA
0mA
IN
OUT
BURST
BURST
= 3.3V
= 5V
= 0.015µF
= 133k
FREQUENCY
500mV/DIV
200mV/DIV
200mV/DIV
500mA/DIV
200mV/DIV
200mA/DIV
0.5A/DIV
BURST
BURST
COMP
1V/DIV
FIXED
LOAD
V
V
V
OUT
OUT
OUT
I
I
I
L
L
L
FF Mode 100-300mA Load Step
V
V
R
CC1 = 270pF
CC2 = 10pF
C
Auto Mode 10mA to 100mA Load
Step
V
V
L = 10µH
C
R
Forced BURST to FF Mode
Switch with 50mA Load
IN
OUT
OUT
IN
OUT
BURST
Z
BURST
= 33K
= 3.3V
= 3.3V
= 5V
= 22µF
= 5V
= 0.015µF
= 133k
L = 10µH
F = 1MHz
200µs/DIV
200µs/DIV
500µs/DIV
www.DataSheet4U.com
V
V
L = 10µH
R
CC1 = 270pF
CC2 = 10pF
C
0mA
100mA
10mA
IN
OUT
OUT
Z
= 33k
= 3.3V
= 5V
= 22µF
3458f